Cisco UCS Server Memory: B-Series, C-Series & X-Series

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Memory upgrades matched to your Cisco UCS server. Each listing covers one Cisco UCS model, using the memory type, speed and module size Cisco specifies, in single modules and matched kits. To find yours, type the model into the search bar at the top of the page, for example C220 M5, C240 M6, B200 M6, X210c M7 or C245 M8. The model is on the system label and in the server inventory in Cisco Intersight or UCS Manager.

Find memory by Cisco UCS series

B-Series blade servers (UCS 5108 chassis): B200 M5, B200 M6, B480 M5.
C-Series rack servers: C220 M5, C220 M6, C220 M7, C220 M8, C225 M6, C225 M8, C240 M5, C240 M6, C240 M7, C240 M8, C245 M6, C245 M8, C480 M5, C480 ML M5, C125 M5.
C-Series AI and GPU servers: C845A M8, C880A M8, C885A M8.
X-Series compute nodes (UCS X9508 chassis): X210c M6, X210c M7, X210c M8, X215c M8, X410c M7, X410c M8.
XE-Series edge compute nodes: XE130c M8, XE150c M8.
S-Series storage server: S3260 M5 server node.

Which memory does my Cisco UCS server use?

M5 (Intel Xeon Scalable): DDR4-2933 ECC RDIMM or LRDIMM. 1st Gen Xeon Scalable processors run memory at up to 2666 MT/s and do not support the 64GB RDIMM or the 128GB and 256GB LRDIMMs; those need 2nd Gen processors. The AMD EPYC-based C125 M5 node uses DDR4-3200.
M6 (3rd Gen Xeon Scalable, AMD EPYC 7003): DDR4-3200 ECC RDIMM or LRDIMM. See DDR4 RDIMM and DDR4 LRDIMM.
M7 (4th and 5th Gen Xeon Scalable): DDR5-4800 ECC RDIMM with 4th Gen processors. With 5th Gen processors the C220 M7, C240 M7 and X210c M7 run DDR5-5600 and add 48GB and 96GB modules; see their DDR5-5600 listings: C220 M7, C240 M7, X210c M7. See DDR5 RDIMM.
M8 (Intel Xeon 6, AMD EPYC 9004/9005): DDR5-6400 ECC RDIMM. The AMD-based C225 M8, C245 M8 and X215c M8 also have DDR5-4800 listings: match the speed to the processor generation installed.

Cisco UCS servers accept either RDIMM or LRDIMM modules, but the two cannot be mixed in one server: match the type already installed, or see the RDIMM and LRDIMM listings for your model. Install identical modules and populate memory channels evenly on each processor for full bandwidth; faster modules run at the speed the platform supports.

Not sure which module fits? Send us your Cisco UCS model and we will confirm the right module before you order.

Buying in volume direct from NEMIX RAM

NEMIX RAM is a US-based server memory specialist, in business since 1993. Every module is researched, matched, and compatibility-tested by NEMIX RAM, is JEDEC-compliant, and is backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for data centers, enterprise IT, service providers, research labs, universities, government buyers and resellers. Request a quote for a UCS domain refresh, a full chassis or multiple identical servers.

More Cisco memory: DDR5 Cisco memory · DDR4 Cisco memory · Cisco LRDIMM · Cisco OEM part numbers (UCS-MR, UCS-ML).

Also searched as: Cisco UCS memory, Cisco UCS RAM, Cisco server memory, UCS C220 memory, UCS C240 RAM, UCS B200 memory, UCS X210c memory, Cisco blade server RAM, Cisco UCS memory upgrade.